【한글자막】 Solidity를 사용한 이더리움 블록체인 개발자 부트캠프

Good question isn’t it? Why should you invest your and time money into learning about the blockchain, and getting involved with this technology, of course within this course we’re focussing on the development aspect. So in this lecture I’m going to be covering why you should learn blockchain development, but rather than going over the advantages of this technology, I’m going to be covering this from a career focussed perspective.

In this lecture I will walk you through the one big benefit Blockchains bring over traditional systems: Fixing the double spending problem. We will cover what is the double spending problem and how it's solved.

What is this blockchain hype? Why is it talked about as being such a revolutionary piece of technology? Well that’s what we’re going to be discussing here, I’ll be going over four key distinguishing factors of the blockchain, of course there are more that could be discussed, but I’ll be going over the three key ones with you - so lets dive in!

What is the blockchain? That’s actually a good question isn’t it - well in this lecture I’ll be explaining more about what the blockchain actually is, so you do understand at more than just surface level. Just so you’re aware my explanation of the blockchain is going to be focussed around the bitcoin blockchain. Once you understand how this blockchain works, going forward you’ll be able to understand how other blockchains work, however, other blockchains do have there own differences as well, but the key fundamental is the same.

Now it's time to give it a try yourself.

https://ethereum-blockchain-developer.com/010-solidity-basics/00-overview/

If there are any questions, reach out in the Q&A at any time.

Duration: 30 Minutes.

The links to the pages I mentioned in the slides:

https://medium.com/coinmonks/storing-on-ethereum-analyzing-the-costs-922d41d6b316

https://www.reddit.com/r/ethereum/comments/ahm0qk/adventureum_a_textbased_crowdsourced/

In this lecture we are going through the ABI Array, the Application Binary Interface, what it is exactly used for and how it is composed of. Then I'll walk you through the first steps of debugging your smart contracts using REMIX

This is the explainer-lecture to the lab from the previous lecture. We are talking about keccak hashes, function signatures, function hashes, how to pad input arguments. I'll also walk you through the details of the ABI (Application Binary Interface) Array again. Lastly, I'm going to introduce the concept of Gas to you!

In this lab we're using libraries to extend our smart contract functionality. I'll show you some examples where Using ... for is best used and we're making our Smart Contract Development safer.

This is the explainer video to the lab in the previous lecture. I'll walk you through the details of Libraries again, so, after this, there should not be any further questions

In this animated explainer video I'll introduce what exactly Blockchain Nodes do on a broader level. At the end of this lecture you will know how they operate and how you are gaining access to the blockchain through the node.

We download geth together and install it.

Understand that geth download the main-net by default. Explain the difference between fast mode, normal mode of downloading the blockchain. Explain that all blocks will be downloaded and it uses quite a lot of disk space.

We explain the typical log output from geth and what the most important parts mean.

Understand that geth is running as a process and you can attach to it from other processes.

Understand what the Genesis.json file is and what the different parameters mean.

Hands-On attaching to the running geth instance and creating a new account.

Hands-On attaching to the running geth instance and mining some ether.

Link to denominators: https://github.com/ethereum/web3.js/blob/0.15.0/lib/utils/utils.js#L40

So when people get started with the blockchain they generally tend to think that the blockchain is just one, what I mean by that is they think only one blockchain exists, and everything is built upon that - that’s it. But you’d be wrong if you thought that, of course if you’re a newbie in this area it’s always a learning process - in this lecture I’m going to go over the three types of blockchains with you, as well as give you some examples of those types of blockchains. That way going forward you’ll understand what people are referring to when they mention a specific type of blockchain.

In this lecture I want to help you understand what the major use cases are for blockchain technology, this will help you realise just how blockchain technology is impacting industries which were otherwise thought of as having matured to the best stage in there innovation lifecycle. I’ll be going over three industries in which blockchain technology can impact hugely, of course there are others as well. But as mentioned I’m going to be covering the top three.

Welcome to this lecture in the course where I’m going to be highlighting four projects that are being built upon Ethereum, a few of them are already live and in the BETA stage. What I hope you’ll gain from this lecture, is being able to understand just how powerful Ethereum really is.

So what are smart contracts, good question isn’t it. In this section I just want to help you understand on a theoretical level what smart contracts actually are. So lets dive into it all.

This lecture is just going to be short and to the point, as I’m aware we’re going over code in this course which is helping you to gain the practical skills you really need! But what I want to show you here is some example code, which aims to help you create your own cryptocurrency utilising the power of Ethereum - because that’s totally possible!

In this lecture I want to go over one key advantage and disadvantage of smart contract technology, because everything else aside that could be mentioned, this is what gets to the heart of it and is key. So that’s what I want to go over in this lecture.

So in this lecture I just want to go over ethereum contract wallets, and accounts with you. But more than just going over them, I want to explain to you how there different. So lets dive in!